A sink mark formed by excessive Shrinkage

All about Shrinkage in Product Design

A sad fact of injection moulding and plastics manufacturing in general, is that plastic shrinks. And sometimes it shrinks a lot. So as plastic Injection moulders we’ve learnt to deal with shrinkage and today we are going to share a few of our t'...

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Lets Talk About Acrylonitrile Butadiene Styrene (ABS)

ABS is purpose built be easy, cheap, stiff and tough, all while being capable of displaying great surface finishes and colors. Originally developed in the late 1940's, ABS combines the acrylonitrile, butadiene and styrene monomers with the int'...

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Lets Talk About Polyoxymethylene

Polyoxymethylene (POM), usually referred to as Acetal, is a widely used engineering plastic. Its primary claim to fame is its use in mechanical parts. If it has to bear a load, like a gear, a handle, a zipper or the foot on a piece of furniture, '...

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Two co-extruded Plastic Profiles

What is Plastic Co-Extrusion?

Plastic Co-extrusion is very similar to Plastic Extrusion, however, with co-extrusion you are inserting multiple polymers into the extrusion dies to produce a single profile with a range of physical characteristics. In this article, we’ll cover'...

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Stereolithographic Printer creating prototype parts.

What Is Stereolithography?

Stereolithography (SLA) is a type of rapid prototyping, and in this article, we will unpack the basic process, advantages and disadvantages of this manufacturing technique.  Along the way will decipher some of the jargon thrown about the rapid p'...

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A plastic part with an extensive Sprue and Runner system, featuring many gates.

All about Gates in Product Design

In this article, we’re talking about gates. And no, not the kind that you shut behind you when you’re leaving the farm. In plastic injection moulding a Gate is where the molten plastic enters the cavity of the tool. That’s to say it’s dif'...

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Lets Talk About Polyethylene Terephthalate

Polyethylene terephthalate (PETE or PET) is one of the most commonly used thermoplastic polymers in the world and is better known in the textile industry by the trade name "polyester." It is a naturally transparent and semi-crystalline plastic wide'...

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Let Talk About Polystyrene

Polystyrene (PS) plastic is a naturally transparent thermoplastic that is available as both a typical solid plastic as well in the form of a rigid foam material. PS plastic is commonly used in a variety of consumer product applications and is also pa'...

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Various Plastic Extrusions

What is Plastic Extrusion?

Extrusion is a simple process and is used the world over, from making spaghetti to window frames and door seals. Plastic Extrusion is when a material is being forced through a die (think a plate with a profile cut into it) and the plastic takes '...

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A Dienamics Part with an Internal Plastic Thread

All About Threads in Product Design

Threads are critical in Injection Moulding. Not only do they require more complexity in the tool design, the resulting plastic part must work perfectly, with next to no warpage and align perfectly when assembled. It’s important that you get it '...

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A Dienamics Part in a Thickness Analysis showing thick regions in Red.

All about Wall Sections in Product Design

We’ve previously mentioned the importance of wall sections in our article about Ribs in Injection Moulding so in this article we’re going to go greater depths with that subject. We’ll talk about the basic process of injection moulding and '...

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Lets Talk About Polycarbonate

Polycarbonate is a naturally transparent amorphous thermoplastic. Although made commercially available in a variety of colors, the raw material allows for the internal transmission of light nearly in the same capacity as glass. Polycarbonate poly'...

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